United States Steel Corporation. (1955). Electrical steel sheets: Engineering manual (4th ed.). United States Steel Corporation.
Citace podle Chicago (17th ed.)United States Steel Corporation. Electrical Steel Sheets: Engineering Manual. 4th ed. Pittsburgh, Pa.: United States Steel Corporation, 1955.
Citace podle MLA (8th ed.)United States Steel Corporation. Electrical Steel Sheets: Engineering Manual. 4th ed. United States Steel Corporation, 1955.
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